课件13张PPT。Grammar Period情态动词情态动词的语法特征1）?情态动词?不能单独做谓语，后面只能接不带to?的不定式(除ought ?和have本身带to)。 2）?情态动词没有人称，数的变化，但有些情态动词，如can、will也有一般式和过去式的变化。3）?情态动词的“时态”形式并不是时间区别的主要标志，不少情况下，情态动词的现在式形式和过去式形式都可用来表示现在时间、过去时间和将来时间。情态动词用法要点1.____________.
He is a native speaker of English, so he can of course speak English quite well.
If you have a good sleep, you will be able to work out this problem.
She could / was able to sing like an angel when she was a child.表能力情态动词用法要点2. ___________.
Accident can happen on such rainy days.
Peter may come with us tonight, but he isn’t sure yet.(93全国)
-Are you coming to Jeff’s party?
-I’m not sure. I might go to the concert instead.（00全国）
This may/ might be done by him.
It’s nearly 7 o’clock. Jack should be here at any moment.表推测（可能性）情态动词用法要点3.____________
Would you do me a favor?
Shall we begin our class?
-Could I borrow your dictionary?
-Yes, of course you can.（92全国）
-Could / Might I use your bike tomorrow morning?
-Yes, you can/ may.
表示请求、允许、允诺情态动词用法要点4.__________
-Must I finish the task right now?
-Yes, you must./ No, you needn’t/ No, you don’t have to .
You needn’t have worked that late last night. It was harmful to your health.
You should go and visit him this afternoon, but I wonder if I will be free.
表示必要性情态动词用法要点5.__________
It must have rained last night, for the road was quite wet.
I saw Mr. Wang just now. He couldn’t have gone to Beijing.
Oh, my flowers died. You should have watered them when I was out for business.
You ought to have come to the meeting earlier.
You needn’t have taken a taxi here, for it was very near to my house.
表示推测或虚拟情态动词用法要点1.表能力
2. 表推测（可能性）
3. 表示请求、允许、允诺
4. 表示必要性
5. 表推测或虚拟语气判断情态动词的用法Our history test was so long last week that no one could finish it.
It was the last day of school, but the teacher said that we could not leave early.
May I have a look at your report?
It’s nearly time for class to start. The teacher should be here soon.
When you eat fish you must be careful with the bones.
能力允许请求推测必要性判断情态动词的用法A man landed on Mars? You must be joking. That can’t be true.
He ought to be there by now.
You don’t have to tell him about it.
The lights were out. They must have been asleep.
He ought not to have treated his parents like that.
推测 必要性对过去事实的推测虚拟推测Exercise 1目标P2 题1—6
题18– 20
目标P10 题1– 5
题18—20 This pen looks like mine, but it isn’t. whose _____ it be?
a. must b. can c. would d. will
2.- ____ I get there on time today?
- No, you don’t have to.
a. Can b. May c. Must d. Should
3.Johnny, you ____ play with the knife, you ____ hurt yourself.
a. won’t…can’t b. mustn’t… may c. shouldn’t…must d. can’t…shouldn’t
4. ____ I have a word with the manager, sir?
a. will b. would c. may d. can
5. He ____ be ill, for he is very strong .
a. can’t b. mustn’t c. may d. could
–May I see the secretary?
-Try. But she ____ want to see anyone.
a. can’t b. may not c. shouldn’t d. would
Exercise 2Feedback见学案。Unit 1 & 2 Grammar—情态动词
I.情态动词的语法特征
情态动词不能_____________,后面接___________.(_________和__________本身带有to)
情态动词本身没有_______和_____的变化。但有些情态动词，如__________________, 有时态的变化。
情态动词的时态并不是主要用于区别________。
II. 观察并总结情态动词的用法。
______________
He is a native speaker of English, so he can of course speak English quite well.
If you have a good sleep, you will be able to work out this problem.
She could / was able to sing like an angel when she was a child.
2. ___________________
Accident can happen on such rainy days.
Peter may come with us tonight, but he isn’t sure yet.(93全国)
-Are you coming to Jeff’s party?
-I’m not sure. I might go to the concert instead.（00全国）
This may/ might be done by him.
It’s nearly 7 o’clock. Jack should be here at any moment.
3. ___________________
Would you do me a favor?
Shall we begin our class?
-Could I borrow your dictionary?
-Yes, of course you can.（92全国）
-Could / Might I use your bike tomorrow morning?
-Yes, you can/ may.
4. _________________
-Must I finish the task right now?
-Yes, you must./ No, you needn’t.
You needn’t have worked that late last night. It was harmful to your health.
You should go and visit him this afternoon, but I wonder if I will be free.
5. ___________________
It must have rained last night, for the road was quite wet.
I saw Mr. Wang just now. He couldn’t have gone to Beijing.
Oh, my flowers died. You should have watered them when I was out for business.
You ought to have come to the meeting earlier.
You needn’t have taken a taxi here, for it was very near to my house.
*注意结构：_______________________
III.判断情态动词的用法
Our history test was so long last week that no one could finish it. （ ）
It was the last day of school, but the teacher said that we could not leave early. （ ）
May I have a look at your report? （ ）
It’s nearly time for class to start. The teacher should be here soon. （ ）
When you eat fish you must be careful with the bones. （ ）
A man landed on Mars? You must be joking. That can’t be true. （ ）
He ought to be there by now. （ ）
You don’t have to tell him about it. （ ）
The lights were out. They must have been asleep. （ ）
He ought not to have treated his parents like that. （ ）
IV. 目标P2， P10
V．Exercise
1. This pen looks like mine, but it isn’t. whose _____ it be?
a. must b. can c. would d. will
2. - ____ I get there on time today?
- No, you don’t have to.
a. Can b. May c. Must d. Should
3. Johnny, you ____ play with the knife, you ____ hurt yourself.
a. won’t…can’t b. mustn’t… may c. shouldn’t…must d. can’t…shouldn’t
4. ____ I have a word with the manager, sir?
a. will b. would c. may d. can
5. He ____ be ill, for he is very strong.
a. can’t b. mustn’t c. may d. could
6.–May I see the secretary?
-Try. But she ____ want to see anyone.
a. can’t b. may not c. shouldn’t d. would
VI. 高考真题小试：看看你做对了几道题？ 我做对了_____题
1.(07福建)My MP4 player isn’t in my bag. Where ______ I have put it ?
A. can B. must C. should D. would
2.(05北京春)I have lost one of my gloves. I _____ it somewhere.
must drop B. must have dropped C. must be dropping D. must have been dropped
3.(04福建)—I will tell Mary about her new job tomorrow.
--You_____ her last week
A. ought to tell B. would have told C. must tell D. should have told
4.(05北京)He ____ have completed his work; otherwise, he wouldn’t be enjoying himself by the seaside.
A. should B. must C. wouldn’t D. can’t
5.(04吉林)You ____ be tired—you’ve only been working for an hour.
A. must not B. won’t C. can’t D. may not
6.(05安徽)Helen _____ go on the trip with us, but she isn’t quite sure yet.
A. shall B. must C. may D. can
7.(05广东) –I ’ve taken someone else’s green sweater by mistake.
--It ____ Harry’s. He always wears green.
A. has to be B. will be C. mustn’t be D. could be
8.(06全国)There’s no light on—they ___ be at home.
A. can’t B. mustn’t C. needn’t D. shouldn’t
9.(06北京)—What’s the name? --Khulaifi. _____ I spell that for you?
A. Shall B. Would C. Can D. Might
10.(07江苏)—She looks very happy. She ___ have passed the exam.
--I guess so. It’s not difficult after all.
A. should B. could C. must D. might
